package org.ht.demo.openapi.util;

import java.util.Collection;
import java.util.Map;

/**
 * Copyright (c) 2000-2003 Liferay Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */




public class Validator {
	public static final String AT = "@";
	public static final String BLANK = "";
	public static final String COLON = ":";
	public static final String COMMA = ",";
	public static final String NULL = "null";
	public static final String PERIOD = ".";
	public static final String SEMICOLON = ";";
	public static final String UNDERLINE = "_";

	public static boolean isNull(Collection coll) {
		if (coll == null) {
			return true;
		}
		if (coll.size() == 0)
			return true;
		return false;
	}

	public static boolean isNotNull(Collection coll) {
		return !isNull(coll);
	}

	public static boolean isNull(String s) {
		if (s == null) {
			return true;
		}
		s = s.trim();
		return (s.equals(BLANK) || s.equals(NULL));
	}
	public static boolean isNull(Map map) {
		if (map == null) {
			return true;
		}
		if (map.size() == 0)
			return true;
		return false;
	}

	public static boolean isNotNull(Map map) {
		return !isNull(map);
	}

	public static boolean isNotNull(String s) {
		return !isNull(s);
	}
}